Compositional Quenching: A Process for Forming Polymer-in-Polymer Microdispersions and Cocontinuous Networks

Nauman, E. Bruce; Ariyapadi, M. V.; Balsara, Nitash P.; Grocela, T.A.; Furno, J.S.; Liu, S.H.; Mallikarjun, Ramesh

doi:10.1080/00986448808940259

Cited by 39 publications

(8 citation statements)

References 17 publications

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“…The particle size is a function of the rate of solvent removal. The higher the removal rate of the solvent the smaller are the particles [10,11]. In our runs the flash was deep and hence a fast rate of solvent removal was achieved.…”

Section: Resultsmentioning

confidence: 71%

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Super HIPS: improved high impact polystyrene with two sources of rubber particles

Alfarraj

Nauman

2004

Polymer

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Section: Resultsmentioning

confidence: 71%

“…The process of compositional quenching [8] was used to generate the blends. Several blends were prepared in this study containing various polymer combinations.…”

Section: Methodsmentioning

confidence: 99%

Super HIPS: improved high impact polystyrene with two sources of rubber particles

Alfarraj

Nauman

2004

Polymer

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“…12 These include physical phase separation techniques (thermally induced phase separation), [13][14][15] precipitation with a liquid anti-solvent, 16 -18 spray drying, 19 compositional quenching 20 and rapid expansion from supercritical solution, 11,[21][22][23] or chemical reaction. 24,25 These techniques are usually performed in a batch process.…”

Section: Introductionmentioning

confidence: 99%

Polystyrene foams. I. Processing‐structure relationships

Doroudiani

Kortschot

2003

J of Applied Polymer Sci

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ABSTRACT:In this study, processing-structure relationships in expanded polystyrene (EPS) made using near-critical carbon dioxide as a physical blowing agent were investigated. In order to investigate the relationship between structure and properties of EPS it was necessary to be able to make samples with a wide range of controlled structures. For this reason, a systematic investigation of the relationship between processing conditions and structure was performed based on a statistical experimental design. Regression analysis was conducted on the data and expressions were developed to quantify the relationships between structural parameters and processing conditions. The samples were saturated with carbon dioxide at relatively high pressure and ambient temperature and the saturated specimens were expanded at elevated temperatures. The importance of the individual processing parameters was determined. Statistical analysis of data showed that foaming time was the most important factor determining foam density, whereas saturation pressure was the most important factor determining cell size and cell density. By controlling the foaming conditions, EPS samples having the same densities and different cell sizes were produced.

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“…Mechanical blending is common and in some instances, reaction is combined with reaction in reactive‐blending. Compositional quenching1 uses a solvent to achieve a single‐phase mixture and then induces phase separation by rapidly removing the solvent by flash devolatilization.…”

Section: Introductionmentioning

confidence: 99%

Spinodal Decomposition in Ternary Systems with Significantly Different Component Diffusivities

Alfarraj

Nauman

2007

Macro Theory & Simulations

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A numerical method for simulating spinodal decomposition in ternary systems with order‐of‐magnitude differences in diffusion coefficients is presented. The method has been partially verified by molecular dynamic simulations and gives results equivalent to the standard technique when the diffusivities are equal. A two‐dimensional simulation of an asymmetric polymer/polymer/polymer system reproduces an experimentally observed bimodal distribution of dispersed‐phase particle sizes. The ripening exponent for the larger particles is near the expected value of 0.33, but that for the smaller particles is only about 0.1. The method was also used for a polymer/polymer/solvent system.magnified image

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Compositional Quenching: A Process for Forming Polymer-in-Polymer Microdispersions and Cocontinuous Networks

Cited by 39 publications

References 17 publications

Super HIPS: improved high impact polystyrene with two sources of rubber particles

Super HIPS: improved high impact polystyrene with two sources of rubber particles

Polystyrene foams. I. Processing‐structure relationships

Spinodal Decomposition in Ternary Systems with Significantly Different Component Diffusivities

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